package com.wc.wcWebsite_core.config;

import java.lang.reflect.Method;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;




@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

	/**
	 * @Description:缓存管理器
	 * @author:wc
	 * @Date:2017年10月12日
	 * @param:@param redisTemplate
	 * @param:@return
	 * @return:CacheManager
	 */
	@Bean
	public CacheManager cacheManager(RedisTemplate<?, ?> redisTemplate) {
		CacheManager cacheManager = new RedisCacheManager(redisTemplate);
		return cacheManager;
	}

	/**
	 * @Description:RedisTemplate缓存操作类,类似于jdbcTemplate的一个类; 
	 * @author:wc
	 * @Date:2017年10月12日
	 * @param:@param connectionFactory
	 * @param:@return
	 * @return:RedisTemplate<String,String>
	 */
	@SuppressWarnings({ "rawtypes", "unchecked" })
	@Bean
	public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory connectionFactory) {

		StringRedisTemplate template=new StringRedisTemplate(connectionFactory);
		
		//key序列化方式，避免出现乱码
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(
				Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();

		return template;
	}
	
	
	/* 自定义key的生成策略 */
	@Bean
	public KeyGenerator keyGenerator(){
		return new KeyGenerator() {
			
			@Override
			public Object generate(Object o, Method m, Object... objects) {
				StringBuilder sb =new StringBuilder();
				sb.append(o.getClass().getName());
				sb.append(m.getName());
				for (Object object : objects) {
					sb.append(object.toString());
				}
				System.out.println("keyGenerator= "+ sb.toString());
				return sb.toString();
			}
		};
	}
}
